Diff: Handlers/GprsHandler.h

Revision:

0:2df78a4443cd

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Handlers/GprsHandler.h	Sun Apr 10 15:47:33 2016 +1000
@@ -0,0 +1,112 @@
+#ifndef GPRSHANDLER_H_
+#define GPRSHANDLER_H_
+
+#include "config.h"
+#ifdef ENABLE_GPRS_TESTING
+/*
+ *  This section of the program is currently under development. The rest of the functions
+ * can run wtihout this component by using the ENABLE_GPRS_TESTING flag.
+ */
+
+#include "USBDevice.h"	// need to include this, so that USBSerial has correct typedefs!
+#include "USBSerial.h"
+#include "AbstractHandler.h"
+
+#define GPRS_BUF_LEN 20
+
+#define GPRS_MESSAGE_MAXLEN 160
+#define GPRS_RECIPIENTS_MAXLEN 20
+
+struct GprsRequest
+{
+    char message[GPRS_MESSAGE_MAXLEN];
+    char recipients[GPRS_RECIPIENTS_MAXLEN];
+};
+class UsbComms;
+class CircBuff;
+
+/*!
+ * \brief The GprsHandler class saves recipients and looks after incoming and outgoing messages
+ *
+ * Options: save recipients internally to this class.
+ * Or - request sends a struct that includes recipients list and message string
+ */
+class GprsHandler : public AbstractHandler
+{
+public:
+	GprsHandler(MyTimers * _timer, UsbComms *_usb);
+	virtual ~GprsHandler();
+
+	void run();
+
+    void setRequest(int request, void *data = 0);
+
+    enum request_t{
+        gprsreq_GprsNone,       ///< No request (for tracking what the last request was, this is initial value for that)
+        gprsreq_SmsSend,        ///< got a string to send to recipient(s)
+        gprsreq_SetRecipients   ///< got a string holding the number(s) we want to send
+    };
+
+private:
+    enum mode_t{
+        gprs_Start,          	///< Set up the state machine and the hardware
+
+        // Restart sequence
+        gprs_PowerOff,          ///< Ensure module is powered down first, so we know it is in its initial state
+        gprs_PowerOffWait,      ///< Give module time to power down
+        gprs_PowerSupplyOn,		///< Once module has fully powered down, power back up to begin using it
+        gprs_PowerSupplyOnWait,	///< Give time to power on properly
+        gprs_PowerSwitchOn,
+        gprs_PowerSwitchOnWait,
+
+        gprs_CheckATReqs,       ///< Check was AT request is next
+
+        // read AT+CMGR=?
+        // write AT+CMGS=?
+        gprs_PostTx,            ///< Send the current buffer to SIM900 and setup timeouts
+        gprs_WaitRx,            ///< Wait for a response over serial
+        gprs_CheckRx,           ///< Check the response. Go back into state machine depending on response
+        
+        gprs_WaitUntilNextRequest, 
+
+        gprs_RxTimeout,         ///< no response
+        gprs_RxError            ///< wrong response
+
+
+    };
+    mode_t mode;            ///< the current state in the state machine
+    mode_t returnMode;      ///< the state to go back to when the expected reply returns from the SIM900
+
+    ///
+    /// \brief The at_req enum stores what AT command should be sent/was just sent to the SIM900
+    ///
+    enum at_req {
+        atreq_Test,         ///< Ping the SIM900
+        atreq_CheckSMS,     ///< Check if an SMS is available
+        atreq_SendSMS       ///< Send an SMS, according to m_lastRequest
+    };
+    at_req m_atReq;
+
+    request_t m_lastRequest;
+    GprsRequest m_lastMessage;
+
+    Serial * m_serial; //!< Serial port for comms with SIM900
+
+    DigitalOut * m_sim900_pwr;	//!< pin used to enable the SIM900 power switch
+    DigitalOut * m_sim900_on;	//!< pin used to drive the power key
+
+    uint8_t m_reqReg;   ///< request register
+
+    unsigned char txBuf[GPRS_BUF_LEN];
+    uint16_t txBufLen;
+    unsigned char rxBuf[GPRS_BUF_LEN];
+    
+    UsbComms *m_usb;
+    CircBuff *m_rxBuff;
+    
+};
+
+#endif
+
+#endif /* GPRSHANDLER_H_ */
+